Whether you're choosing a superhero or alien-like costume, you'll first have to consider whether the bastions of political correctness will see new, horrific meaning in it.

A Burger King in Rego Park, New York, decided to hell with tiptoeing around the world.

So, as several Twitter users have already spotted, this Burger King draped itself in ghostly white sheets with ghastly faces painted upon them and added the magically offensive word: McDonald's.

The ghosts even had a yellow M instead of eyebrows.

Fast food chains have a history of McRibbing each other. Who could forget Burger King last year offering an olive branch by suggesting McDonald's allow it to make a McWhopper? McDonald's declined to play.

The ghostly McDonald's does have a sign that explains the joke for those who are still shaking their heads. It says: "BOOOOO. JUST KIDDING. WE STILL FLAME-GRILL OUR BURGERS. HAPPY HALLOWEEN." (McDonald's fries its burgers, as if you didn't know.)

But what does McDonald's think of all this?

A spokeswoman offered muted amusement: "Who wouldn't want to masquerade as McDonald's for Halloween when we are serving up treats like McCafe beverages, apple pies and our world famous fries?"